The White House had previously teased plans for Trump to visit Florida but said any trip would not be finalized until the situation there had stabilized to the point that a presidential visit would not add undue stress to local authorities.

Shortly after, first lady Melania Trump tweeted that she would accompany her husband to Florida on Thursday.

In Lee County, which includes Cape Coral and Fort Myers, the Florida Emergency Management Agency said 66 percent of the area's 290,000 electrical customers were still without power Wednesday.

Millions are still without power across Florida, and several areas have been devastated by Irma, especially the Florida Keys. Trump tweeted Wednesday that he planned to meet "with our great Coast Guard, FEMA and numerous fearless first responders & others".

"When you think of the incredible power of that storm, and while people unfortunately passed, it was such a small number", Trump said.

The first lady says she's set to meet with FEMA and "people affected by #HurricaneIrma", tweeting out a video as she lifts off from the South Lawn en route to Joint Andrews air force base. He said, 'DACA, we're going to do it early.

Hurricane Irma slowed to a Category Two storm after making its second landfall in Florida on Sunday, US forecasters said, warning it still had "dangerous" winds causing "life-threatening" storm surges, AFP reports.